Which word containing the prefix anti- means "an agent that counteracts"

Read the excerpt from act 4, scene 1, of the tragedy of julius caesar. [exit lepidus] antony. this is a slight, unmeritable man, meet to be sent on errands. is it fit, the three-fold world divided, he should stand one of the three to share it? octavius. so you thought him, and took his voice who should be p to die, in our black sentence and proscription. antony. octavius, i have seen more days than you. and though we lay these honors on this man. to ease ourselves of divers sland’rous loads, he shall but bear them as the a** bears gold, to groan and sweat under the business, either led or driven as we point the way; and having brought our treasure where we will, then take we down his load, and turn him off, like to the empty a**, to shake his ears and graze in commons. what does this interaction reveal about antony’s character? select two options. he feels like he is getting old. he values the efforts of his peers. his opinion of beasts of burden is low. he presents a false demeanor to others. he is ambitious for himself and his friends.